A hinged adjustable distortion generator model test bench

Abstract

The invention discloses a hinge-type adjustable distortion generator model test bench, which includes a generating pipeline, a high-power centrifugal fan and an electric valve; the generating pipeline includes a bell mouth, an inlet measurement section, an experiment section, an outlet measurement section and The expansion section; the experimental section is equipped with a distortion generator; the present invention adopts a direct-current suction layout, and the airflow is concentrated by the bell mouth and then enters the inlet measurement section, and then enters the outlet measurement section after passing through the experimental section to generate distortion, and then enters the centrifuge after passing through the expansion section. Fan, finally through the electric valve and discharged. The invention can obtain the distorted flow field generated by the hinge-type adjustable distortion generator under different geometric states quickly and at low cost, and obtain the law between the state of the distortion generator and the generated distorted flow field. The effect provides technical support.

Description

technical field [0001] The invention relates to the technical field of aero-engine and fluid parameter measurement, in particular to a hinge-type adjustable distortion generator model test bench, which is suitable for researching the total output generated by the hinge-type adjustable distortion generator under different flow Mach numbers. Prediction and adjustment guidance method of pressure distortion flow field. Background technique [0002] In practical applications, almost without exception, aeroengines must work under non-uniform air intake conditions, that is, working under inlet flow field distortion. Inlet flow field distortion will have a huge impact on the aerodynamic performance of the engine, mainly including: affecting the aeroengine The stable boundary generally moves the stable boundary of the engine downward, reduces the surge margin, and reduces the overall performance of the engine. In severe cases, it may cause the engine to rotate, stall, surge, cause ma...

AI Technical Summary

Problems solved by technology

If a real distortion generator is used to carry out experimental research on an aero-engine test bench, the cost will inevitably be high, and if a problem is found, it is necessary to redesign and improve the distortion generating device, which will inevitably lead to waste of research and development funds and prolong the research and development cycle

If numerical simulation is used for research, it is necessary to face problems such as the existence of errors between the calculation results and the real results, and the insufficient computing power of ordinary computers to meet the needs.

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